public void FindBest_NoMatch()
{
string ciphertext = "Znk ykixkz oy Igkygx.";
var result = KeyFinder.FindBest(
ciphertext,
new ShiftCipher(),
new ShiftKeySpaceSource(),
new SubstringSpeculativePlaintextRanker("answer")
);
Assert.IsNull(result);
}
public void FindBest_Shift_Substring()
{
string ciphertext = "Znk ykixkz oy Igkygx.";
var result = KeyFinder.FindBest(
ciphertext,
new ShiftCipher(),
new ShiftKeySpaceSource(),
new SubstringSpeculativePlaintextRanker("secret")
);
Assert.AreEqual(6, result.Key);
Assert.AreEqual(1.0, result.Rank);
Assert.AreEqual("The secret is Caesar.", result.SpeculativePlaintext);
}